1、BRITISH STANDARD BS EN ISO 5261:1999 Technical drawings Simplified representation of bars and profile sections The European Standard EN ISO 5261:1999 has the status of a British Standard ICS 01.100.20 BS EN ISO 5261:1999 This British Standard, having been prepared under the direction of the Consumer
2、 Products and Services Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 October 1999 BSI 15 September 2002 ISBN 0 580 35052 5 National foreword This British Standard is the English language version of EN ISO 5261:1999. It is identical with IS
3、O 5261:1995. The UK participation in its preparation was entrusted to Technical Committee TDE/4, Engineering drawing, Metrology, Precision measurement and all related documentation, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/Europe
4、an committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK A list of organizations represented on this committee can be obtained on request to its secretary. Cros
5、s-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to
6、 in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contrac
7、t. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, t
8、he ISO title page, pages ii to iv, pages 1 to 8, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO
9、5261 July 1999 ICS 01.100.30 Descriptors: drawings, technical drawings, metal bars, metal sections, graphic methods, graphic symbols, dimensioning. English version Technical drawings - Simplified representation of bars and profile sections (ISO 5261:1995) Dessins techniques - Reprsentation simplifie
10、 des barres et des profils (ISO 5261:1995) Technische Zeichnungen - Vereinfachte Angabe von Stben und Profilen (ISO 5261:1995) This European Standard was approved by CEN on 27 May 1999. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givin
11、g this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versio
12、ns (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cz
13、ech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: ru
14、e de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 5261:1999 EEN ISO 5261:1999 BSI 15 September 2002 Foreword The text of the International Standard from Technical Committee ISO/TC 10 “Techni
15、cal drawings, product definition and related documentation” of the International Organization for Standardization (ISO) has been taken over as a European Standard by CEN/CS. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endo
16、rsement, at the latest by January 2000, and conflicting national standards shall be withdrawn at the latest by January 2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belg
17、ium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 5261:1995 has been approved by CEN as a European Standa
18、rd without any modification.EN ISO 5261:1999 ii BSI 15 September 2002 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO techni
19、cal committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely w
20、ith the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of
21、 the member bodies casting a vote. International Standard ISO 5261 was prepared by Technical Committee ISO/TC 10, Technical drawings, product definition and related documentation, Subcommittee SC 6, Mechanical engineering documentation. This second edition of ISO 5261 together with ISO 5845-1:1995 c
22、ancel and replace ISO 5261:1981, which has been technically revised. Annex A of this International Standard is for information only. EN ISO 5261:1999 BSI 15 September 2002 iii Introduction For purposes of uniformity, the figures given in this International Standard are shown in first angle orthograp
23、hic projection and all the linear dimensions are in millimetres. It is understood that other orthographic projections or units of measure could equally well have been used without prejudice to the principles established. The figures, chosen only to illustrate the text, may be incomplete.iv blankEN I
24、SO 5261:1999 BSI 15 September 2002 1 1 Scope This International Standard specifies rules complementary to ISO 128 1)and ISO 129 for the simplified representation of bars and profile sections in assembly and detail drawings concerning, among others: structural metal work consisting of plates and shee
25、ts, profile sections and compound elements (including bridges, frameworks, pilings, etc.); lifting and transport appliances; storage tanks and pressure vessels; lifts, moving stairways and conveyor belts. 2 Normative references The following standards contain provisions which, through reference in t
26、his text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most rece
27、nt editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 128:1982, Technical drawings General principles of presentation. ISO 10209-1:1992, Technical product documentation Vocabulary Part 1: Terms relating to technical dr
28、awings: general and types of drawings. 3 Definitions For the purposes of this International Standard, the definitions given in ISO 10209-1 apply. 4 Complementary rules for the simplified representation of bars and profile sections The simplified representation of bars and profile sections shall cons
29、ist of their relevant ISO designation followed, if necessary, by the cutting length, separated by a hyphen. This designation may also be used when filling in an item list (see ISO 7573). EXAMPLE The simplified representation of an equal leg angle profile in accordance with ISO 657-1, measuring 50 mm
30、 50 mm 4 mm and having a cutting length of 1 000 mm shall consist of the following ISO designation: Angle profile ISO 657-1 50 50 4 1 000 If there is no designation specified in an International Standard or other relevant standard, the designation shall be composed of the graphical symbol followed b
31、y the necessary dimensions, in accordance with Tables 1 and 2. 1) This International Standard is at present under revision.EN ISO 5261:1999 2 BSI 15 September 2002 Table 1 Description of bar section Dimensions Designation Graphical symbol Necessary dimensions Circular solid section d Tube d t Square
32、 solid section b Square hollow section b t Rectangular solid section b h Rectangular hollow section b h t Hexagonal solid section s Hexagonal hollow section s tEN ISO 5261:1999 BSI 15 September 2002 3 Table 2 Triangular solid section b Semicircular solid section b h Description of profile section De
33、signation Graphical symbol Alternative letter symbol Dimensions Angle section L T-section T I-beam section I H-beam section H Characteristic dimensions Channel section U Z-section Z Rail sectionEN ISO 5261:1999 4 BSI 15 September 2002 Table 1 applies to the designation of bar sections EXAMPLE The si
34、mplified representation of a rectangular solid bar section measuring 50 mm 10 mm and having a cutting length of 100 mm shall consist of the following designation: Table 2 applies to the designation of profile sections, and indicates which graphical symbols may be replaced by upper case letters, if a
35、ppropriate, for simplification. EXAMPLE The simplified representation of an angle profile section measuring 89 mm 60 mm 7 mm and having a cutting length of 500 mm shall consist of one of the following two designations: or The designation shall be positioned in close proximity to the relevant item (s
36、ee Figure 1, Figure 2 and Figure 3). Figure 3 includes L-shaped profiles for which the graphical symbols are positioned to reflect the arrangement for assembly. 5 Schematic representation of structural metal work Compound frames of structural metal work can be schematically represented by continuous
37、 thick lines (type A, ISO 128) indicating the centroidal lines of the intersecting elements. In this case, the values of the distances between the reference points of the centroidal lines shall be indicated directly on the represented elements (see Figure 4). Closed dimensional chains are permitted.
38、 However, in the case of cumulative tolerances, equalization via one of the dimensions shall be indicated. Bulb angle section Bulb flat section 50 10 100 89 60 70 500 L8 9 60 70 500EN ISO 5261:1999 BSI 15 September 2002 5 Figure 1 Figure 2EN ISO 5261:1999 6 BSI 15 September 2002 Figure 3EN ISO 5261:
39、1999 BSI 15 September 2002 7 Figure 4EN ISO 5261:1999 8 BSI 15 September 2002 Annex A (informative) Bibliography l ISO 129:1985, Technical drawings Dimensioning General principles, definitions, methods of execution and special indications. 2 ISO 7573:1983, Technical drawings Item lists. 3 ISO 657-1:
40、1989, Hot-rolled steel sections Part 1: Equal-leg angles Dimensions.blankBS EN ISO 5261:1999 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and
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